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From "Allen Wittenauer (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-10998) Bash tab completion support for newer versions of hadoop
Date Fri, 22 Aug 2014 13:42:11 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-10998?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14106828#comment-14106828

Allen Wittenauer commented on HADOOP-10998:

It'd probably be better if you took at a look at and updated HADOOP-6310, as it has some other
fixes in it as well I think.

> Bash tab completion support for newer versions of hadoop
> --------------------------------------------------------
>                 Key: HADOOP-10998
>                 URL: https://issues.apache.org/jira/browse/HADOOP-10998
>             Project: Hadoop Common
>          Issue Type: Improvement
>          Components: scripts
>         Environment: Hadoop 2.0.0-cdh4.2.1
>            Reporter: Jim Hester
>            Priority: Trivial
>         Attachments: HADOOP-10998.patch
> The included version of bash completion has not been updated in almost two years and
does not work correctly with more recent versions of Hadoop.
> The command substitutions in the script were using backticks, which were interpolating
variables before they were executed and breaking the script.  In particular the awk commands
were breaking due to this interpolation.
> The attached patch changes the backticks to {{$(command)}} style for command substitution
and updates the script to work properly with newer versions of hadoop.
> I tested the script using {{zsh 5.0.5}}, {{zsh 4.3.10]}, {{bash-4.1.2}} and {{bash-3.2}}.
 Hadoop versions tested were cloudera version {{2.0.0-cdh4.2.1}} and briefly Apache {{2.5.0}}.

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